Test system and test board for oil injection hole of cooling oil pipe assembly

Abstract

The utility model discloses a test system and a test bench for an oil injection hole of a cooling oil pipe assembly, and the test system comprises a gas pickup target, a positioning tool, and a gas supply source. A gas collecting hole is formed in the gas picking target, is used for collecting gas sprayed from the oil spraying hole and is communicated with a gas inlet of the gas pressure sensor through a pipeline; the air pressure sensor is connected with the controller and used for sending detected air pressure data into the controller, the controller is connected with the displayer and sends the air pressure data into the displayer, and the displayer is used for receiving and displaying the air pressure data. The gas supply source passes through the gas proportional valve and the gas supply switch valve through a pipeline and then is communicated with the gas supply mouthpiece, and the gas supply mouthpiece is used for being inserted into a gas inlet mouthpiece of the cooling oil pipe assembly; the positioning tool is used for clamping the cooling oil pipe assembly and positioning the cooling oil pipe assembly; high-pressure air is used for replacing oil liquid to test the oil injection hole of the cooling oil pipe assembly, the machining error of the oil injection hole can be effectively tested, whether machining burrs exist or not can be effectively tested, and the testing precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing of cooling oil pipe assemblies, and particularly relates to a testing system and a testing bench for injection holes of cooling oil pipe assemblies. Background Art

[0002] The electric drive cooling system is used to cool the electric drive motor to ensure the normal operation of the electric drive motor; in addition to overall cooling of the electric drive motor, which can be achieved by adding a large amount of lubricating oil, fixed-point cooling can also be carried out, and fixed-point oil injection cooling can be achieved through cooling oil pipes. The cooling injection oil pipe of an oil-cooled motor with the publication number CN220653134U and a cooling oil pipe assembly with the application number 2024214932123 both include a main oil passage and injection branches connected to the main oil passage. The injection branches are provided with sub-oil passages inside, and injection holes are distributed on both the injection branches and the oil collecting pipe die; during use, the cooling oil pipe assembly is wound around the outside of the electric drive motor and close to the electric drive motor, and the injection holes are oriented towards specific points to be cooled on the electric drive motor, and the injection holes perform fixed-point oil injection cooling on the electric drive motor, so that a small amount of oil injection can meet the cooling requirements of the electric drive motor. In order to facilitate the control of the quality of the cooling oil pipe assembly, it is necessary to test the cooling oil pipe assembly. Summary of the Utility Model

[0003] In response to the needs in the prior art, the utility model provides a testing system and a testing bench for injection holes of a cooling oil pipe assembly, which are used to test the injection holes of the cooling oil pipe assembly.

[0004] A testing system for injection holes of a cooling oil pipe assembly includes a gas collecting target, a positioning tooling and a gas supply source; gas collecting holes are provided on the gas collecting target, and the gas collecting holes correspond to the injection holes to be tested one by one and are used to collect the gas ejected from the injection holes. The gas collecting holes are connected to the air inlet of a pressure sensor through a pipeline; the pressure sensor is connected to a controller and is used to send the detected pressure data into the controller. The controller is connected to a display and sends the pressure data into the display, and the display is used to receive and display the pressure data; the gas supply source is connected to a gas supply nozzle through a pipeline via a gas proportion valve and a gas supply switch valve, and the gas supply nozzle is used to be inserted into the air inlet joint of the cooling oil pipe assembly; the positioning tooling is used to clamp the cooling oil pipe assembly and position it.

[0005] Furthermore, an air storage tank is arranged between the gas supply source and the gas proportion valve.

[0006] A test bench for cooling the injection holes of an oil pipe assembly, comprising a fixed table and a test system for cooling the injection holes of the oil pipe assembly. The fixed table is fixedly connected to the middle of the bracket. The air pickup target and the positioning tooling of the test system are both fixedly connected to the fixed table. The air pressure sensors are arranged in a rectangular array in the middle of the bracket and behind the fixed table. The display screen is fixedly connected to the upper part of the bracket and above the fixed table.

[0007] Furthermore, a first rotary telescopic cylinder is fixedly arranged at a position on the fixed table on one side of the positioning tooling. The first rotary telescopic cylinder is close to the air intake nozzle. A swing arm is fixedly connected to the rotary telescopic rod of the first rotary telescopic cylinder. The air supply nozzle is fixedly connected to the free end of the swing arm. The air supply switch valve, the first rotary telescopic cylinder and the start switch are all connected to the controller. The controller is used to control the air supply switch valve and the first rotary telescopic cylinder according to the control signal of the start switch. The start switch is fixedly arranged on the bracket and in front of the fixed table.

[0008] Furthermore, a safety light curtain is fixedly arranged on the bracket at a position in front of the fixed table, and the safety light curtain is located behind the start switch.

[0009] Furthermore, the fixed table is detachably and fixedly connected to the bracket. A vertical first connecting plate is fixedly connected to the fixed table. A second connecting plate is fixedly arranged on the bracket at a position between the air pressure sensors and the fixed table. Plug-in connectors are distributed on both the first connecting plate and the second connecting plate. The air pickup target is connected to the air pressure sensor through the plug-in connectors on the first connecting plate and the plug-in connectors on the second connecting plate in sequence.

[0010] Furthermore, a workbench is fixedly arranged in the middle of the bracket. The fixed table is placed on the workbench and fits with it. A vertical positioning pin is fixedly arranged on the workbench at a position corresponding to the fixed table. The positioning pin is inserted into the jack arranged on the fixed table.

[0011] Furthermore, the positioning tooling includes an arc-shaped positioning table. An opening for passing through the injection branch pipe is formed on the positioning table along its arc direction. A plurality of second rotary telescopic cylinders are fixedly arranged on the fixed table at a position close to the positioning table. The second rotary telescopic cylinders are arranged at positions corresponding to the middle and the end of the positioning table. The top of the telescopic rod of the second rotary telescopic cylinder is higher than the positioning table. A second swing arm is fixedly installed at the top of the telescopic rod. A pressing block is fixedly connected below the free end of the second swing arm. The second swing arm is used to swing the pressing block above the positioning table and press the pressing block against the oil pipe assembly after pressing down.

[0012] Furthermore, a vertical first air pickup target is fixedly connected to the fixed table at a position below the opening. The axial direction of the air collecting hole of the first air pickup target is perpendicular to the axial direction of the opening. The first air pickup target is used to correspond to the injection hole on the injection branch pipe.

[0013] Furthermore, a number of second air pickup targets are distributed along the arc on the inner ring of the positioning table. The upper end of the second air pickup target extends above the positioning table. A gas collecting hole is provided at the upper end of the second air pickup target. The gas collecting hole of the second air pickup target faces upward above the positioning table and is used to correspond to the injection holes on the main oil passage.

[0014] The beneficial effects of the present utility model are as follows: By using high-pressure air instead of oil to test the injection holes of the cooling oil pipe assembly, the processing errors of the injection holes and whether there are processing burrs can be effectively detected, the test accuracy can be improved, and the product quality can be accurately controlled; the structure of the present utility model is simple and convenient to operate. Description of the Drawings

[0015] Figure 1 is the structural block diagram of the test system in the present utility model;

[0016] Figure 2 is the structural diagram of the cooling oil pipe assembly in the present utility model;

[0017] Figure 3 is the schematic structural diagram of the test bench in the present utility model;

[0018] Figure 4 is the schematic assembly structural diagram of the positioning tooling and the air pickup target in the present utility model. Detailed Embodiment

[0019] The following will describe the present utility model in detail with reference to the drawings. The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model. The orientation terms such as left, middle, right, up, and down in the embodiments of the present utility model are only relative concepts to each other or are referenced based on the normal use state of the product, and should not be considered as restrictive.

[0020] A test system for the injection holes of a cooling oil pipe assembly, as Figure 1As shown in the figure, it includes a gas pickup target, a positioning tooling, and a gas supply source; there are gas collecting holes on the gas pickup target, and the gas collecting holes correspond to the fuel injection holes to be tested one by one and are used to collect the gas ejected from the fuel injection holes. The gas collecting holes are connected to the air inlet of the pressure sensor through pipelines; the pressure sensor is connected to the controller and is used to send the detected air pressure data into the controller. The controller is connected to the display and sends the air pressure data into the display. The display is used to receive and display the air pressure data; the gas supply source is connected to the gas supply nozzle through pipelines via a gas proportion valve and a gas supply switch valve. The gas supply nozzle is used to plug into the air inlet nozzle of the cooling oil pipe assembly; the positioning tooling is used to clamp the cooling oil pipe assembly and position it. The gas supply source is a gas supply station in the factory. To ensure the stability and continuity of the air pressure, a gas storage tank is arranged between the gas supply source and the gas proportion valve.

[0021] When the test system works, the cooling oil pipe assembly is positioned and fixed on the positioning tooling, and then the gas supply nozzle is connected to the air inlet nozzle of the cooling oil pipe assembly. After passing stable gas into the cooling oil pipe assembly through the gas source, the gas ejects from the fuel injection holes of the cooling oil pipe assembly and forms a columnar air flow. Since the machining errors and burrs of the fuel injection holes will affect the gas flow direction, the air flow of the fuel injection holes is picked up by the gas pickup target, so that the pressure generated by the gas entering the gas collecting holes is detected by the pressure sensor, and whether the fuel injection holes are qualified is judged according to this pressure.

[0022] A test bench for the fuel injection holes of a cooling oil pipe assembly, combined with Figure 2 and Figure 3 As shown in the figure, it includes a fixed table 2 and a test system for the fuel injection holes of the cooling oil pipe assembly. The fixed table 2 is fixedly connected to the middle of the bracket 1. The gas pickup target and the positioning tooling of the test system are both fixedly connected to the fixed table. The pressure sensors 4 are arranged in a rectangular array in the middle of the bracket 1 and are located behind the fixed table 2. The display screen 5 is fixedly connected to the upper part of the bracket 1 and is located above the fixed table 2. To facilitate the insertion of the gas supply nozzle into the air inlet nozzle 101 of the cooling oil pipe assembly 100, combined with Figure 4As shown in the figure, a first rotary telescopic cylinder 22 is fixedly arranged at a position on the fixed table 2 on one side of the positioning tooling. The first rotary telescopic cylinder 22 is close to the air inlet nozzle 101. A swing arm 222 is fixedly connected to the rotary telescopic rod 221 of the first rotary telescopic cylinder 22. The air supply nozzle 223 is fixedly connected to the free end of the swing arm 222. The air supply switch valve, the first rotary telescopic cylinder 22 and the start switch 12 are all connected to the controller. The controller is used to control the air supply switch valve and the first rotary telescopic cylinder 22 according to the control signal of the start switch 12. The start switch 12 is fixedly arranged on the bracket 1 and is located on the front side of the fixed table 2. A safety light curtain is fixedly arranged at a position on the bracket 1 on the front side of the fixed table 2, and the safety light curtain is located at a position behind the start switch 12; to facilitate the replacement of the positioning tooling and the connection of the pipeline between the air pickup target and the air pressure sensor 4, the fixed table 2 is detachably and fixedly connected to the bracket 1. A vertical first connecting plate 21 is fixedly connected to the fixed table 2. A second connecting plate 11 is fixedly arranged at a position between the air pressure sensor 4 and the fixed table 2 on the bracket 1. Plug connectors 221 are distributed on both the first connecting plate 21 and the second connecting plate 11. The air pickup target is connected to the air pressure sensor 4 through the plug connectors 221 on the first connecting plate 21 and the plug connectors 221 on the second connecting plate 11 in sequence; a workbench is fixedly arranged in the middle of the bracket 1. The fixed table 2 is placed on the workbench and fits with it. A vertical positioning pin (not shown in the figure) is fixedly arranged at a position on the workbench corresponding to the fixed table 2. The positioning pin is inserted into the jack arranged on the fixed table.

[0023] In addition, as Figure 4As shown in the figure, the positioning tooling includes an arc-shaped positioning table 24. An opening 243 for passing through the oil injection branch pipe 103 is formed in the positioning table 24 along its arc direction. A plurality of second rotary telescopic cylinders 25 are fixedly arranged on the fixed table 2 at a position close to the positioning table 24. The second rotary telescopic cylinders 25 are arranged at positions corresponding to the middle and end of the positioning table 24. The top of the telescopic rod 251 of the second rotary telescopic cylinder 25 is higher than the positioning table 24. A second swing arm 252 is fixedly installed at the top of the telescopic rod 251. A pressing block 253 is fixedly connected below the free end of the second swing arm 252. The second swing arm 252 is used to swing the pressing block 253 to directly above the positioning table 24 and press the pressing block 253 against the cooling oil pipe assembly 100 after pressing down; A vertical first air pickup target 242 is fixedly connected to the fixed table 24 at a position below the opening 243. The axial direction of the air collecting holes of the first air pickup target 242 is perpendicular to the axial direction of the opening 243. The first air pickup target 242 is used to correspond to the oil injection holes 102 on the oil injection branch pipe 103; A plurality of second air pickup targets 241 are distributed along the arc direction on the inner circle of the positioning table 24. The upper end of the second air pickup target 241 extends above the positioning table 24. Air collecting holes are provided at the upper end of the second air pickup target 241. The air collecting holes of the second air pickup target 241 face upward above the positioning table 24 and are used to correspond to the oil injection holes 102 on the main oil passage.

[0024] When the test bench is working, the operator places the cooling oil pipe assembly on the positioning tooling. After pressing the start switch 12, the second rotary telescopic cylinder 25 is started, and the cooling oil pipe assembly is positioned and fixed on the positioning table 24. Then, after the first rotary telescopic cylinder 22 is started, the air supply nozzle 223 is connected to the air intake nozzle 101 of the cooling oil pipe assembly. Then, a constant-pressure gas is introduced into the cooling oil pipe assembly through the air source, and a columnar air flow is ejected from the oil injection hole 102. Then, the gas of the air flow is collected through the air collecting holes of the air pickup target. Since the errors and burrs of the oil injection holes will affect the columnar thickness and direction of the air flow, the qualification of the oil injection holes is tested according to the data of the pressure sensor 4.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A test system for cooling the injection holes of an oil pipe assembly, characterized in that: It includes a gas collection target, a positioning tooling, and a gas supply source; on the gas collection target, gas collection holes are provided, and the gas collection holes correspond to the fuel injection holes to be measured one by one and are used to collect the gas ejected from the fuel injection holes. The gas collection holes are communicated with the air inlet of the pressure sensor through pipelines; the pressure sensor is connected to the controller and is used to send the detected pressure data into the controller. The controller is connected to the display and sends the pressure data into the display. The display is used to receive and display the pressure data; the gas supply source is communicated with the gas supply nozzle through pipelines via a gas proportion valve and a gas supply switch valve. The gas supply nozzle is used to be inserted into the air inlet nozzle of the cooling oil pipe assembly; the positioning tooling is used to clamp the cooling oil pipe assembly and position it.

2. The test system for cooling the fuel injection holes of the fuel pipe assembly according to claim 1, wherein: A gas storage tank is arranged between the gas supply source and the gas proportion valve.

3. A test bench for cooling the injection holes of an oil pipe assembly, characterized in that: It includes a fixed table and the test system for the fuel injection holes of the cooling oil pipe assembly described in claim 1 or 2. The fixed table is fixedly connected to the middle of the bracket. The gas collection target and the positioning tooling of the test system are both fixedly connected to the fixed table. The pressure sensors are arranged in a rectangular array in the middle of the bracket and are located behind the fixed table. The display screen is fixedly connected to the upper part of the bracket and is located above the fixed table.

4. The test bench for cooling the fuel injection holes of the oil pipe assembly according to claim 3, characterized in that: A first rotary telescopic cylinder is fixedly arranged at a position on the fixed table on one side of the positioning tooling. The first rotary telescopic cylinder is close to the air inlet nozzle. A swing arm is fixedly connected to the rotary telescopic rod of the first rotary telescopic cylinder. The gas supply nozzle is fixedly connected to the free end of the swing arm. The gas supply switch valve, the first rotary telescopic cylinder, and the start switch are all connected to the controller. The controller is used to control the gas supply switch valve and the first rotary telescopic cylinder according to the control signal of the start switch. The start switch is fixedly arranged on the bracket and is located in front of the fixed table.

5. The test bench for cooling the injection holes of the oil pipe assembly according to claim 4, characterized in that: A safety light curtain is fixedly arranged at a position on the bracket in front of the fixed table, and the safety light curtain is located behind the start switch.

6. The test bench for cooling the injection holes of the oil pipe assembly according to claim 4, characterized in that: The fixed table is detachably fixedly connected to the bracket. A vertical first connecting plate is fixedly connected to the fixed table. A second connecting plate is fixedly arranged at a position between the pressure sensor and the fixed table on the bracket. Plug connectors are distributed on both the first connecting plate and the second connecting plate. The gas collection target is connected to the pressure sensor through the plug connectors on the first connecting plate and the plug connectors on the second connecting plate in sequence.

7. The test bench for cooling the injection holes of the oil pipe assembly according to claim 6, characterized in that: A workbench is fixedly arranged in the middle of the bracket. The fixed table is placed on the workbench and fits with it. A vertical positioning pin is fixedly arranged at a position on the workbench corresponding to the fixed table. The positioning pin is inserted into the jack arranged on the fixed table.

8. The test bench for cooling the fuel injection holes of the oil pipe assembly according to claim 3, characterized in that: The positioning tooling includes an arc-shaped positioning table. Openings for passing through the fuel injection branch pipes are arranged on the positioning table along its arc direction. A number of second rotary telescopic cylinders are fixedly arranged at positions on the fixed table close to the positioning table. Second rotary telescopic cylinders are arranged at positions corresponding to the middle and the end of the positioning table. The top of the telescopic rod of the second rotary telescopic cylinder is higher than the positioning table. A second swing arm is fixedly installed at the top of the telescopic rod. A pressing block is fixedly connected below the free end of the second swing arm. The second swing arm is used to swing the pressing block to directly above the positioning table and press the pressing block against the cooling oil pipe assembly after pressing down.

9. The test bench for cooling the fuel injection holes of the fuel pipe assembly according to claim 8, characterized in that: A vertical first air pickup target is fixedly connected at a position below the opening on the fixed table. The axis of the air collecting hole of the first air pickup target is perpendicular to the axis of the opening. The first air pickup target is used to correspond to the fuel injection hole on the fuel injection branch pipe.

10. The test bench for cooling the injection holes of the oil pipe assembly according to claim 8, characterized in that: A number of second air pickup targets are distributed along the arc direction on the inner ring of the positioning table. The upper end of the second air pickup target extends above the positioning table. An air collecting hole is provided at the upper end of the second air pickup target. The air collecting hole of the second air pickup target faces upward of the positioning table and is used to correspond to the fuel injection hole on the main oil passage.

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